文章基本信息

标题：Direct measurement of topological interactions in polymers under shear using neutron spin echo spectroscopy
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作者：Maciej Kawecki ; Franz A. Adlmann ; Philipp Gutfreund 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2019
卷号：9
期号：1
页码：1-6
DOI：10.1038/s41598-019-39437-2
出版社：Springer Nature
摘要：We present in-situ neutron spin echo measurements on an entangled polydimethylsiloxane melt under shear and demonstrate the ability to monitor nano-scale dynamics in flowing liquids. We report no changes in the topological interactions of the chains for shear rates approaching the inverse longest relaxation time. Further experiments following along this line will allow to systematically test the predictions of theories, like e.g. convective constraint release.